<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>何为数据代理</title>
    <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
    <!-- 数据代理:
                通过一个对象代理另一个对象中属性的操作 读/写
    -->

    <script type="text/javascript">
       let obj1 = {x:100} 
       let obj2 = {y:200} 

       Object.defineProperty(obj2,'x',{
           get(){
               return obj1.x
           },
           set(value){
               obj1.x=value
           },
       })
    </script>

</body>
</html>